Small edits to documentation.md.
Small edits to testing.Rmd.
Small edits to knitr.Rmd.
Converted Knitr lesson from RMarkdown to Markdown. I think it is better off in Markdown because none of the code chunks are evaluated, and it is easier to show knitr code examples this way.
Merge pull request #38 from jdblischak/doc-and-testing

Doc and testing
More small edits to knitr lesson.
Created file to hold global chunk options. Specifically this is to set
the chunk option tidy to FALSE, which means code chunks will appear
exactly as written in the RMarkdown file. Each RMarkdown file sources
this file with the global chunk options making it easy to change the
behaviour of all the lessons at once. I added the chunk which sources
this file to all the RMarkdown files using the following command:

```
find full-R-bootcamp/ -name "*Rmd" -exec sed -i 1i'\`\`\`{r, include = FALSE}\nsource("../chunk_options.R")\n\`\`\`' {} \;
```
Fixes #45
 Merge branch 'gh-pages' of https://github.com/karthik/bc into gh-pages
Merge pull request #44 from jdblischak/tidy

tidy = FALSE to preserve code formatting
Merge pull request #43 from jdblischak/doc-and-testing

More small edits to knitr lesson.
Fixed #40, fixed #41, fixed #42
Added an example file.Rmd since we refer to it in the knitr.md
Fixed broken link
Added missing data file. fixes #34
Removed unclass to address part of #26
fixes #26
Cleaned up knitr

Fixed several typos and edited the language to be consistent.